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7.5ct Rhodolite (Round, 11.86×11.86mm, Purple) vs 7.5ct Amethyst (Round, 13.42×13.42mm, Violet)


Quick summary: When looked from above (face-up position), 7.5ct Amethyst (13.42×13.42mm, round cut) appears 28% larger than 7.5ct Rhodolite (11.86×11.86mm, round cut). See below how they compare side-by-side on a ring and finger.

7.5ct Rhodolite (round cut)
vs
 7.5ct Amethyst (round cut)
purple
 
violet
11.86×11.86 mm 13.42×13.42 mm
actual size
Actual size of 7.5ct Rhodolite (round cut, 11.86×11.86mm, Purple color)   Actual size of 7.5ct Amethyst (round cut, 13.42×13.42mm, Violet color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Purple 7.5ct Rhodolite (round cut, 11.86×11.86mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Violet 7.5ct Amethyst (round cut, 13.42×13.42mm) on a right ring and finger
Your settings
Ring
 Gold
Skin tone
 Light
Ring diameter
 16.9 mm
Ring width
 3.0 mm
Finger length
 64 mm
Finger coverage
 71% vs 80%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 7.5ct Rhodolite Round (11.86×11.86mm, Purple) and 7.5ct Amethyst Round (13.42×13.42mm, Violet) as they would appear on a ring and finger. Adjust the ring and finger size to get an idea of how these gemstones would look on your finger.

Where to buy?

For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile

Face-up Size

All things being equal, Rhodolite will face-up smaller than Amethyst for a given carat weight, because it has higher specific gravity (3.84 vs. 2.65 - this means it's "heavier" compared to Amethyst of the same size). Face-up size also depends heavily on the proportions of the cut.

Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.


7.5 Ct Rhodolite (Round) 7.5 Ct Amethyst (Round)
11.86×11.86 mm vs 13.42×13.42 mm
110.47 mm²   141.45 mm²
Face-up size outline for 7.5ct Amethyst (13.42×13.42mm, round cut)
Face-up size outline for 7.5ct Rhodolite (11.86×11.86mm, round cut)
7.5ct Rhodolite Round (11.86×11.86mm)
7.5ct Amethyst Round (13.42×13.42mm)
Difference: 28% (30.98 mm²)
7.5ct Amethyst (Round, 13.42×13.42mm) has approx. 28% more face-up area than 7.5ct Rhodolite (Round, 11.86×11.86mm).


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